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Old 12-04-2011, 11:50 PM
Peter Colberg
 
Default Bug#651015: linux-image-3.1.0-1-amd64: Turtle Beach USB Audio fails with Sandy Bridge USB 2.0 controller

Package: linux-2.6

Version: 3.1.4-1
Severity: normal
Tags: upstream patch

Dear Maintainer,

After upgrading to newer hardware as detailed below (PCI devices), my
Turtle Beach USB Audio card stopped working with Twinkle, a VoIP SIP
client. Upon starting Twinkle, it fails to detect the speaker and
microphone devices with the following error messages:

Sun 19:36:53
Critical: Opening ALSA driver failed: snd_pcm_start failed: Broken pipe

Sun 19:36:53
Critical: Opening ALSA driver failed: snd_pcm_start failed: Broken pipe
Twinkle 1.4.2, 25 February 2009

This coincides with the following kernel messages:

[44368.330704] cannot submit datapipe for urb 0, error -28: not enough bandwidth
[44368.387786] cannot submit datapipe for urb 0, error -28: not enough bandwidth

The same kernel message has been reported [1] to occur with a
different USB audio card, and a patch has been proposed [2].

[1] https://bugzilla.redhat.com/show_bug.cgi?id=527813

[2] http://marc.info/?l=linux-usb&m=131973404328622

Using the test-patches script described in the Debian Linux Kernel
Handbook, I compiled a custom Debian kernel with the patch [2]
applied, and indeed this resolves the issue. With this fix, the
Turtle Beach USB Audio card works with Twinkle again.

Could this patch be applied to the Debian kernel?

The comment hinting the patch [4] suggests it has not been merged for 3.2.

[3] http://kernel-handbook.alioth.debian.org/ch-common-tasks.html

[4] https://bugzilla.redhat.com/show_bug.cgi?id=527813#c16

Thanks,
Peter


-- Package-specific info:
** Version:
Linux version 3.1.0-1-amd64 (Debian 3.1.4-1) (waldi@debian.org) (gcc version 4.6.2 (Debian 4.6.2-5) ) #1 SMP Tue Nov 29 13:47:12 UTC 2011

** Command line:
BOOT_IMAGE=/vmlinuz-3.1.0-1-amd64 root=/dev/mapper/vg-root ro pcie_aspm=force i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1

** Kernel log:
[44363.758196] usb 4-1.2: new full speed USB device number 4 using ehci_hcd
[44363.852439] usb 4-1.2: New USB device found, idVendor=10f5, idProduct=0211
[44363.852451] usb 4-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[44363.852458] usb 4-1.2: Product: Turtle Beach USB Audio
[44363.852463] usb 4-1.2: Manufacturer: Generic
[44363.852467] usb 4-1.2: SerialNumber: 0000000001
[44363.857017] input: Generic Turtle Beach USB Audio as /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.2/4-1.2:1.3/input/input18
[44363.857380] generic-usb 0003:10F5:0211.0008: input,hidraw0: USB HID v1.00 Device [Generic Turtle Beach USB Audio] on usb-0000:00:1d.0-1.2/input3
[44368.330704] cannot submit datapipe for urb 0, error -28: not enough bandwidth
[44368.387786] cannot submit datapipe for urb 0, error -28: not enough bandwidth

** PCI devices:
00:00.0 Host bridge [0600]: Intel Corporation 2nd Generation Core Processor Family DRAM Controller [8086:0104] (rev 09)
Subsystem: Lenovo Device [17aa:21da]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
Latency: 0
Capabilities: <access denied>
Kernel driver in use: agpgart-intel

00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:21da]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 50
Region 0: Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at 5000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915

00:16.0 Communication controller [0780]: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 [8086:1c3a] (rev 04)
Subsystem: Lenovo Device [17aa:21da]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx+
Latency: 0
Interrupt: pin A routed to IRQ 11
Region 0: Memory at f2625000 (64-bit, non-prefetchable) [size=16]
Capabilities: <access denied>

00:19.0 Ethernet controller [0200]: Intel Corporation 82579LM Gigabit Network Connection [8086:1502] (rev 04)
Subsystem: Lenovo Device [17aa:21ce]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 49
Region 0: Memory at f2600000 (32-bit, non-prefetchable) [size=128K]
Region 1: Memory at f262b000 (32-bit, non-prefetchable) [size=4K]
Region 2: I/O ports at 5080 [size=32]
Capabilities: <access denied>
Kernel driver in use: e1000e

00:1a.0 USB Controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 [8086:1c2d] (rev 04) (prog-if 20 [EHCI])
Subsystem: Lenovo Device [17aa:21da]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 16
Region 0: Memory at f262a000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:1b.0 Audio device [0403]: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller [8086:1c20] (rev 04)
Subsystem: Lenovo Device [17aa:21da]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 47
Region 0: Memory at f2620000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel

00:1c.0 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 [8086:1c10] (rev b4) (prog-if 00 [Normal decode])
Control: I/O- Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1c.1 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 [8086:1c12] (rev b4) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
Memory behind bridge: f2500000-f25fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1c.3 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 [8086:1c16] (rev b4) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Bus: primary=00, secondary=05, subordinate=0c, sec-latency=0
I/O behind bridge: 00004000-00004fff
Memory behind bridge: f1d00000-f24fffff
Prefetchable memory behind bridge: 00000000f0400000-00000000f0bfffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1c.4 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 [8086:1c18] (rev b4) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Bus: primary=00, secondary=0d, subordinate=0d, sec-latency=0
I/O behind bridge: 00003000-00003fff
Memory behind bridge: f1500000-f1cfffff
Prefetchable memory behind bridge: 00000000f0c00000-00000000f13fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1c.6 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 7 [8086:1c1c] (rev b4) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Bus: primary=00, secondary=0e, subordinate=0e, sec-latency=0
Memory behind bridge: f1400000-f14fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1d.0 USB Controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 [8086:1c26] (rev 04) (prog-if 20 [EHCI])
Subsystem: Lenovo Device [17aa:21da]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 23
Region 0: Memory at f2629000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:1f.0 ISA bridge [0601]: Intel Corporation QM67 Express Chipset Family LPC Controller [8086:1c4f] (rev 04)
Subsystem: Lenovo Device [17aa:21da]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Capabilities: <access denied>

00:1f.2 SATA controller [0106]: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller [8086:1c03] (rev 04) (prog-if 01 [AHCI 1.0])
Subsystem: Lenovo Device [17aa:21da]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin B routed to IRQ 48
Region 0: I/O ports at 50a8 [size=8]
Region 1: I/O ports at 50b4 [size=4]
Region 2: I/O ports at 50a0 [size=8]
Region 3: I/O ports at 50b0 [size=4]
Region 4: I/O ports at 5060 [size=32]
Region 5: Memory at f2628000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci

00:1f.3 SMBus [0c05]: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller [8086:1c22] (rev 04)
Subsystem: Lenovo Device [17aa:21da]
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin C routed to IRQ 18
Region 0: Memory at f2624000 (64-bit, non-prefetchable) [size=256]
Region 4: I/O ports at efa0 [size=32]
Kernel driver in use: i801_smbus

03:00.0 Network controller [0280]: Intel Corporation Centrino Ultimate-N 6300 [8086:4238] (rev 3e)
Subsystem: Intel Corporation Centrino Ultimate-N 6300 3x3 AGN [8086:1111]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 51
Region 0: Memory at f2500000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: iwlagn

0d:00.0 System peripheral [0880]: Ricoh Co Ltd Device [1180:e823] (rev 07) (prog-if 01)
Subsystem: Lenovo Device [17aa:21da]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at f1500000 (32-bit, non-prefetchable) [size=256]
Capabilities: <access denied>
Kernel driver in use: sdhci-pci

0e:00.0 USB Controller [0c03]: NEC Corporation uPD720200 USB 3.0 Host Controller [1033:0194] (rev 04) (prog-if 30 [XHCI])
Subsystem: Lenovo Device [17aa:21da]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 18
Region 0: Memory at f1400000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: xhci_hcd


** USB devices:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 004 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 004 Device 004: ID 10f5:0211 Turtle Beach


-- System Information:
Debian Release: wheezy/sid
APT prefers testing
APT policy: (500, 'testing'), (200, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.1.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages linux-image-3.1.0-1-amd64 depends on:
ii debconf [debconf-2.0] 1.5.41
ii initramfs-tools [linux-initramfs-tool] 0.99
ii linux-base 3.4
ii module-init-tools 3.16-1

Versions of packages linux-image-3.1.0-1-amd64 recommends:
ii firmware-linux-free 3

Versions of packages linux-image-3.1.0-1-amd64 suggests:
pn grub-pc 1.99-14
pn linux-doc-3.1 <none>

Versions of packages linux-image-3.1.0-1-amd64 is related to:
pn firmware-bnx2 <none>
pn firmware-bnx2x <none>
pn firmware-ipw2x00 <none>
pn firmware-ivtv <none>
pn firmware-iwlwifi 0.34
pn firmware-linux <none>
pn firmware-linux-nonfree <none>
pn firmware-qlogic <none>
pn firmware-ralink <none>
pn xen-hypervisor <none>

-- debconf information excluded



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Archive: 20111205005053.GA5661@alcyone">http://lists.debian.org/20111205005053.GA5661@alcyone
 
Old 12-05-2011, 12:36 AM
Ben Hutchings
 
Default Bug#651015: linux-image-3.1.0-1-amd64: Turtle Beach USB Audio fails with Sandy Bridge USB 2.0 controller

On Sun, 2011-12-04 at 19:50 -0500, Peter Colberg wrote:
> Package: linux-2.6
>
> Version: 3.1.4-1
> Severity: normal
> Tags: upstream patch
>
> Dear Maintainer,
>
> After upgrading to newer hardware as detailed below (PCI devices), my
> Turtle Beach USB Audio card stopped working with Twinkle, a VoIP SIP
> client. Upon starting Twinkle, it fails to detect the speaker and
> microphone devices with the following error messages:
>
> Sun 19:36:53
> Critical: Opening ALSA driver failed: snd_pcm_start failed: Broken pipe
>
> Sun 19:36:53
> Critical: Opening ALSA driver failed: snd_pcm_start failed: Broken pipe
> Twinkle 1.4.2, 25 February 2009
>
> This coincides with the following kernel messages:
>
> [44368.330704] cannot submit datapipe for urb 0, error -28: not enough bandwidth
> [44368.387786] cannot submit datapipe for urb 0, error -28: not enough bandwidth
>
> The same kernel message has been reported [1] to occur with a
> different USB audio card, and a patch has been proposed [2].
>
> [1] https://bugzilla.redhat.com/show_bug.cgi?id=527813
>
> [2] http://marc.info/?l=linux-usb&m=131973404328622
>
> Using the test-patches script described in the Debian Linux Kernel
> Handbook, I compiled a custom Debian kernel with the patch [2]
> applied, and indeed this resolves the issue. With this fix, the
> Turtle Beach USB Audio card works with Twinkle again.

Thanks for doing this testing in advance.

> Could this patch be applied to the Debian kernel?
>
> The comment hinting the patch [4] suggests it has not been merged for 3.2.
[...]

It has been included in 3.2-rc3 as:

commit 811c926c538f7e8d3c08b630dd5844efd7e000f6
Author: Thomas Poussevin <thomas.poussevin@parrot.com>
Date: Thu Oct 27 18:46:48 2011 +0200

USB: EHCI: fix HUB TT scheduling issue with iso transfer

This seems to require a further fix which is in Linus's tree but not yet
released:

commit e3420901eba65b1c46bed86d360e3a8685d20734
Author: Matthieu CASTET <castet.matthieu@free.fr>
Date: Mon Nov 28 11:30:22 2011 +0100

EHCI : Fix a regression in the ISO scheduler

I'll apply both of these.

Ben.

--
Ben Hutchings
Absolutum obsoletum. (If it works, it's out of date.) - Stafford Beer
 
Old 12-05-2011, 12:43 AM
Peter Colberg
 
Default Bug#651015: linux-image-3.1.0-1-amd64: Turtle Beach USB Audio fails with Sandy Bridge USB 2.0 controller

On Mon, Dec 05, 2011 at 01:36:22AM +0000, Ben Hutchings wrote:
> > Could this patch be applied to the Debian kernel?
> >
> > The comment hinting the patch [4] suggests it has not been merged for 3.2.
> [...]
>
> It has been included in 3.2-rc3 as:
>
> commit 811c926c538f7e8d3c08b630dd5844efd7e000f6
> Author: Thomas Poussevin <thomas.poussevin@parrot.com>
> Date: Thu Oct 27 18:46:48 2011 +0200
>
> USB: EHCI: fix HUB TT scheduling issue with iso transfer
>
> This seems to require a further fix which is in Linus's tree but not yet
> released:
>
> commit e3420901eba65b1c46bed86d360e3a8685d20734
> Author: Matthieu CASTET <castet.matthieu@free.fr>
> Date: Mon Nov 28 11:30:22 2011 +0100
>
> EHCI : Fix a regression in the ISO scheduler
>
> I'll apply both of these.

Very nice, thanks.

Peter



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